import time, pyb

led1 = pyb.LED(1) # Red LED = 1, Green LED = 2, Blue LED = 3, IR LEDs = 4.
led2 = pyb.LED(2)
led3 = pyb.LED(3)

usb = pyb.USB_VCP() # This is a serial port object that allows you to
# communciate with your computer. While it is not open the code below runs.

while(1):
    led1.on()
    led2.on()
    led3.on()
    time.sleep_ms(150)
    led1.off()
    led2.off()
    led3.off()
    time.sleep_ms(100)
    led1.on()
    led2.on()
    led3.on()
    time.sleep_ms(150)
    led1.off()
    led2.off()
    led3.off()
    time.sleep_ms(100)
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